Modeling centerline damage with DEFORM

摘要

The DEFORM metalworking modeling system can be applied to the development of centerline damage, by way of the Cockcroft and Latham workability criterion, and this paper summarizes such recent work at Rensselaer. Near-centerline flow in the absence and presence of an inclusion has been modeled, and comparisons have been made to Cockcroft and Latham projections from tensile testing. Beyond this, shear strain modeling has been undertaken, both for shear strains at the "equator" of spherical inclusions and for chevron-shaped shear strain fields.